12245866854221 has 32 divisors (see below), whose sum is σ = 16467416598528. Its totient is φ = 8794601519040.

The previous prime is 12245866854191. The next prime is 12245866854233.

12245866854221 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12245866854221 - 2¹⁴ = 12245866837837 is a prime.

It is a super-2 number, since 2×12245866854221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12245866854121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8806475 + ... + 10101768.

It is an arithmetic number, because the mean of its divisors is an integer number (514606768704).

Almost surely, 2^{12245866854221} is an apocalyptic number.

12245866854221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12245866854221 is a deficient number, since it is larger than the sum of its proper divisors (4221549744307).

12245866854221 is a wasteful number, since it uses less digits than its factorization.

12245866854221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18908921.

The product of its digits is 14745600, while the sum is 56.

The spelling of 12245866854221 in words is "twelve trillion, two hundred forty-five billion, eight hundred sixty-six million, eight hundred fifty-four thousand, two hundred twenty-one".